<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
  <title>Document</title>
</head>
<body>
  <div id='app'>
    <ol>
      <li v-for="todo in toDoList.toDo3">
        {{todo.text}}
      </li> 
    </ol>
  </div>
  <script>
    var app = new Vue({
      el:'#app',
      data: {
        toDoList:{
          toDo1:null
        }
      }
    })
  </script>
</body>
</html>